Abstract(#br)Background(#br)There is extensive lack of awareness of maternal mental health and its impact on child development in low- and middle-income countries (LAMICs). The aim of this systematic review was to analyze evidence for various maternal perinatal mental health disorders and their association with different domains of infant and toddler neurodevelopment during the first two postnatal years in LAMICs.(#br)Methods(#br)A comprehensive literature search was conducted within six databases from Jan 1990–April 2019. All included studies were narratively synthesized.(#br)Results(#br)Twenty-four studies, nine cross sectional and 15 longitudinal cohort studies, were included. Three studies were conducted in low-income, 11 in lower-middle-income and ten in upper-middle-income... countries. The majority of studies assessed maternal mental health postnatally and 14 of these 22 studies found a significant association with infant and toddler neurodevelopment. Five of the ten studies reporting on exposure to prenatal mental health found a significant association. The most common maternal mental health disorder studied was depression, while the main neurodevelopmental outcomes assessed were motor, cognitive and language development.(#br)Limitations(#br)Meta-analysis could not be conducted due to the variability in the reported maternal mental health disorders and the different times of assessment of exposures and outcomes.(#br)Conclusions(#br)Maternal perinatal mental health disorders and their association with different domains of neurodevelopment in LAMICs is still inconclusive due to a limited number of papers. Mother-infant dyads in LAMICs are exposed to multiple and cumulative risk factors and causal pathways between maternal mental health and infant neurodevelopment are still poorly understood.